Taps and Dies For 901-801-510-4xx

[Basil]

Many thanks - was going to sacrifice a battery for the connector - will see if I have the right tap in my tap box.

Baz

[mnealtx]

This DEFINITELY needs to be stickyfied!!!

[bzlytbeer]

Agreed, please sticky this!

[Sun Vaporer]

This question has been out there for a long time with only a few answers---I think Cisco has done a great job here to say the least. Thread stuck and thanks Cisco for sharing.


Sun

[sio2]

Thanks! I'd add that to determine the correct metric drill bit to go with these taps, subtract the pitch from the diameter of the tap.

For example: For a 901 Connector, the tap size is 8mm in diameter by .75 pitch. 8 - .75 = 7.25. So you will need to drill a 7.25mm diameter hole before running your tap through.

Victor Machinery is great, very knowledgeable and helpful folks. Those local to Brooklyn can just stop by.

[muldrick]

Originally Posted by sio2

Thanks! I'd add that to determine the correct metric drill bit to go with these taps, subtract the pitch from the diameter of the tap.

For example: For a 901 Connector, the tap size is 8mm in diameter by .75 pitch. 8 - .75 = 7.25. So you will need to drill a 7.25mm diameter hole before running your tap through.

Victor Machinery is great, very knowledgeable and helpful folks. Those local to Brooklyn can just stop by.

Awesome, good info.
Let me ask this, that 901 needs to be male threads for the atti to screw on to, how do I determine the OD of that pipe? 8 + .75???? (8.75mm OD tube) or 11/32".
I just tried a 1/4L plumbing tube (standard 1/4" pipe), don't bother.
Guess I'll try my hobby shop tomorrow.

If anyone has leads and locations on where to get tubing, please post it.
I'm looking now.

Here? http://www.doityourself.com/invt/u690370

[muldrick]

Hmmm, not getting any input here....
Anywho, I found a brass tube at a hobby shop that'll work for the 901 atty. Ask for K&S 5/16 Round Brass No. 133 or get it here.
It is quite tough to get the die on, I messed up one end. But once you get it strated it cuts threads ok.

Now, gotta find a tube that will accept the 8 X .75 tap.

[Vaporer]

Excellent finds and info to all !

Thanks for sticking it Sun.
I keep a folder and copy and paste this gold type info into files for reference.

Vaporer

[sio2]

Muldrick, the diameter of the 901 rod will be 8mm. 5/16ths is very, very close, and should work fine (about .002 off).

Grind a shallow taper on the end, and it will make it far easier to get your die started, nothing huge about 1/16" at around 45 deg. Also make sure you are using the correct side of the die. Most dies are cut so that they have a taper, start with the wider side. Every 1/2 turn of the cut, break the thread by turning it back about a 1/4 turn, then proceed to cut again. This will ensure that the die doesn't get bogged down with shavings. Once you have cut the full thread, back it off and turn the die around and run it back down the thread.

hope this helps.

[muldrick]

Originally Posted by muldrick

Anywho, I found a brass tube at a hobby shop that'll work for the 901 atty. Ask for K&S 5/16 Round Brass No. 133 or get it here.
It is quite tough to get the die on, I messed up one end. But once you get it strated it cuts threads ok.

Yep, I found that Sio, (thanks)
Now, gotta find a tube that will accept the 8 X .75 tap for the RN4081 atty.